| #!/usr/bin/python |
| # Copyright 2016 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """api_static_checks.py - Enforce Cronet API requirements.""" |
| |
| import argparse |
| import os |
| import re |
| import shutil |
| import sys |
| import tempfile |
| |
| REPOSITORY_ROOT = os.path.abspath( |
| os.path.join(os.path.dirname(__file__), os.pardir, os.pardir, os.pardir)) |
| |
| sys.path.insert(0, os.path.join(REPOSITORY_ROOT, 'build/android/gyp')) |
| from util import build_utils # pylint: disable=import-error |
| |
| sys.path.insert(0, os.path.join(REPOSITORY_ROOT, 'components')) |
| from cronet.tools import update_api |
| |
| |
| # These regular expressions catch the beginning of lines that declare classes |
| # and methods. The first group returned by a match is the class or method name. |
| from cronet.tools.update_api import CLASS_RE |
| METHOD_RE = re.compile(r'.* ([^ ]*)\(.*\);') |
| |
| # Allowed exceptions. Adding anything to this list is dangerous and should be |
| # avoided if possible. For now these exceptions are for APIs that existed in |
| # the first version of Cronet and will be supported forever. |
| # TODO(pauljensen): Remove these. |
| ALLOWED_EXCEPTIONS = [ |
| 'org.chromium.net.impl.CronetEngineBuilderImpl/build ->' |
| ' org/chromium/net/ExperimentalCronetEngine/getVersionString:' |
| '()Ljava/lang/String;', |
| 'org.chromium.net.urlconnection.CronetFixedModeOutputStream$UploadDataProviderI' |
| 'mpl/read -> org/chromium/net/UploadDataSink/onReadSucceeded:(Z)V', |
| 'org.chromium.net.urlconnection.CronetFixedModeOutputStream$UploadDataProviderI' |
| 'mpl/rewind -> org/chromium/net/UploadDataSink/onRewindError:' |
| '(Ljava/lang/Exception;)V', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/disconnect ->' |
| ' org/chromium/net/UrlRequest/cancel:()V', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/disconnect ->' |
| ' org/chromium/net/UrlResponseInfo/getHttpStatusText:()Ljava/lang/String;', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/disconnect ->' |
| ' org/chromium/net/UrlResponseInfo/getHttpStatusCode:()I', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/getHeaderField ->' |
| ' org/chromium/net/UrlResponseInfo/getHttpStatusCode:()I', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/getErrorStream ->' |
| ' org/chromium/net/UrlResponseInfo/getHttpStatusCode:()I', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection/setConnectTimeout ->' |
| ' org/chromium/net/UrlRequest/read:(Ljava/nio/ByteBuffer;)V', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection$CronetUrlRequestCallbac' |
| 'k/onRedirectReceived -> org/chromium/net/UrlRequest/followRedirect:()V', |
| 'org.chromium.net.urlconnection.CronetHttpURLConnection$CronetUrlRequestCallbac' |
| 'k/onRedirectReceived -> org/chromium/net/UrlRequest/cancel:()V', |
| 'org.chromium.net.urlconnection.CronetChunkedOutputStream$UploadDataProviderImp' |
| 'l/read -> org/chromium/net/UploadDataSink/onReadSucceeded:(Z)V', |
| 'org.chromium.net.urlconnection.CronetChunkedOutputStream$UploadDataProviderImp' |
| 'l/rewind -> org/chromium/net/UploadDataSink/onRewindError:' |
| '(Ljava/lang/Exception;)V', |
| 'org.chromium.net.urlconnection.CronetBufferedOutputStream$UploadDataProviderIm' |
| 'pl/read -> org/chromium/net/UploadDataSink/onReadSucceeded:(Z)V', |
| 'org.chromium.net.urlconnection.CronetBufferedOutputStream$UploadDataProviderIm' |
| 'pl/rewind -> org/chromium/net/UploadDataSink/onRewindSucceeded:()V', |
| 'org.chromium.net.urlconnection.CronetHttpURLStreamHandler/org.chromium.net.url' |
| 'connection.CronetHttpURLStreamHandler -> org/chromium/net/ExperimentalCron' |
| 'etEngine/openConnection:(Ljava/net/URL;)Ljava/net/URLConnection;', |
| 'org.chromium.net.urlconnection.CronetHttpURLStreamHandler/org.chromium.net.url' |
| 'connection.CronetHttpURLStreamHandler -> org/chromium/net/ExperimentalCron' |
| 'etEngine/openConnection:(Ljava/net/URL;Ljava/net/Proxy;)Ljava/net/URLConne' |
| 'ction;', |
| # getMessage() is an java.lang.Exception member, and so cannot be removed. |
| 'org.chromium.net.impl.NetworkExceptionImpl/getMessage -> ' |
| 'org/chromium/net/NetworkException/getMessage:()Ljava/lang/String;', |
| ] |
| |
| |
| def find_api_calls(dump, api_classes, bad_calls): |
| # Given a dump of an implementation class, find calls through API classes. |
| # |dump| is the output of "javap -c" on the implementation class files. |
| # |api_classes| is the list of classes comprising the API. |
| # |bad_calls| is the list of calls through API classes. This list is built up |
| # by this function. |
| |
| for line in dump: |
| if CLASS_RE.match(line): |
| caller_class = CLASS_RE.match(line).group(1) |
| if METHOD_RE.match(line): |
| caller_method = METHOD_RE.match(line).group(1) |
| if line[8:16] == ': invoke': |
| callee = line.split(' // ')[1].split('Method ')[1].split('\n')[0] |
| callee_class = callee.split('.')[0] |
| assert callee_class |
| if callee_class in api_classes: |
| callee_method = callee.split('.')[1] |
| assert callee_method |
| # Ignore constructor calls for now as every implementation class |
| # that extends an API class will call them. |
| # TODO(pauljensen): Look into enforcing restricting constructor calls. |
| # https://crbug.com/674975 |
| if callee_method.startswith('"<init>"'): |
| continue |
| # Ignore VersionSafe calls |
| if 'VersionSafeCallbacks' in caller_class: |
| continue |
| bad_call = '%s/%s -> %s/%s' % (caller_class, caller_method, |
| callee_class, callee_method) |
| if bad_call in ALLOWED_EXCEPTIONS: |
| continue |
| bad_calls += [bad_call] |
| |
| |
| def check_api_calls(opts): |
| # Returns True if no calls through API classes in implementation. |
| |
| temp_dir = tempfile.mkdtemp() |
| |
| # Extract API class files from jar |
| jar_cmd = ['jar', 'xf', os.path.abspath(opts.api_jar)] |
| build_utils.CheckOutput(jar_cmd, cwd=temp_dir) |
| shutil.rmtree(os.path.join(temp_dir, 'META-INF'), ignore_errors=True) |
| |
| # Collect names of API classes |
| api_classes = [] |
| for dirpath, _, filenames in os.walk(temp_dir): |
| if not filenames: |
| continue |
| package = os.path.relpath(dirpath, temp_dir) |
| for filename in filenames: |
| if filename.endswith('.class'): |
| classname = filename[:-len('.class')] |
| api_classes += [os.path.normpath(os.path.join(package, classname))] |
| |
| shutil.rmtree(temp_dir) |
| temp_dir = tempfile.mkdtemp() |
| |
| # Extract impl class files from jars |
| for impl_jar in opts.impl_jar: |
| jar_cmd = ['jar', 'xf', os.path.abspath(impl_jar)] |
| build_utils.CheckOutput(jar_cmd, cwd=temp_dir) |
| shutil.rmtree(os.path.join(temp_dir, 'META-INF'), ignore_errors=True) |
| |
| # Process classes |
| bad_api_calls = [] |
| for dirpath, _, filenames in os.walk(temp_dir): |
| if not filenames: |
| continue |
| # Dump classes |
| dump_file = os.path.join(temp_dir, 'dump.txt') |
| if os.system('javap -c %s > %s' % ( |
| ' '.join(os.path.join(dirpath, f) for f in filenames).replace( |
| '$', '\\$'), |
| dump_file)): |
| print 'ERROR: javap failed on ' + ' '.join(filenames) |
| return False |
| # Process class dump |
| with open(dump_file, 'r') as dump: |
| find_api_calls(dump, api_classes, bad_api_calls) |
| |
| shutil.rmtree(temp_dir) |
| |
| if bad_api_calls: |
| print 'ERROR: Found the following calls from implementation classes through' |
| print ' API classes. These could fail if older API is used that' |
| print ' does not contain newer methods. Please call through a' |
| print ' wrapper class from VersionSafeCallbacks.' |
| print '\n'.join(bad_api_calls) |
| return not bad_api_calls |
| |
| |
| def check_api_version(opts): |
| if update_api.check_up_to_date(opts.api_jar): |
| return True |
| print 'ERROR: API file out of date. Please run this command:' |
| print ' components/cronet/tools/update_api.py --api_jar %s' % ( |
| os.path.abspath(opts.api_jar)) |
| return False |
| |
| |
| def main(args): |
| parser = argparse.ArgumentParser( |
| description='Enforce Cronet API requirements.') |
| parser.add_argument('--api_jar', |
| help='Path to API jar (i.e. cronet_api.jar)', |
| required=True, |
| metavar='path/to/cronet_api.jar') |
| parser.add_argument('--impl_jar', |
| help='Path to implementation jar ' |
| '(i.e. cronet_impl_native_java.jar)', |
| required=True, |
| metavar='path/to/cronet_impl_native_java.jar', |
| action='append') |
| parser.add_argument('--stamp', help='Path to touch on success.') |
| opts = parser.parse_args(args) |
| |
| ret = True |
| ret = check_api_calls(opts) and ret |
| ret = check_api_version(opts) and ret |
| if ret and opts.stamp: |
| build_utils.Touch(opts.stamp) |
| return ret |
| |
| |
| if __name__ == '__main__': |
| sys.exit(0 if main(sys.argv[1:]) else -1) |